Effect of external and internal phosphate status on arsenic toxicity and accumulation in rice seedlings
文献类型：期刊论文
| 作者 | Duan Guilan; Wang Lihong |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:3页码:346-351 |
| 关键词 | Phosphorus Arsenate Arsenic Toxicity Arsenic Accumulation Rice Seedlings |
| 英文摘要 | Phosphorus (P) deficiency is thought to exacerbate the arsenic (As) phytotoxicity in paddy rice. The experiments were conducted to investigate the effects of external phosphate supply on As accumulation in rice and its toxicity under phosphate deficiency conditions. Rice seedlings pretreated with a phosphorus deficient nutrient solution (-P) for 14 d accumulated more As than those pretreated with a normal phosphorus supply nutrient solution (+P). Rice protreated with -P showed As toxicity symptoms after being exposed to 50 mu mol/L arsenate for 4 It, while +P rice did not show any toxicity symptoms. Arsenic toxicity symptoms can be alleviated by increasing external P concentrations. The arsenate uptake rate and accumulation corresponded with the As toxicity in rice plants. Arsenic concentrations in rice roots decreased with increasing external phosphate concentrations. The lowest As accumulation and the highest P accumulation were found when the external P concentration reached 100 mu mol/L. In short, P deficiency increased the sensitivity of rice to arsenate and increasing of external phosphate supply could alleviate As toxicity. |
| WOS记录号 | WOS:000264381900013 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21786]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Duan Guilan,Wang Lihong. Effect of external and internal phosphate status on arsenic toxicity and accumulation in rice seedlings[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2009,21(3):346-351. |
| APA | Duan Guilan,&Wang Lihong.(2009).Effect of external and internal phosphate status on arsenic toxicity and accumulation in rice seedlings.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,21(3),346-351. |
| MLA | Duan Guilan,et al."Effect of external and internal phosphate status on arsenic toxicity and accumulation in rice seedlings".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 21.3(2009):346-351. |
入库方式： OAI收割
来源：生态环境研究中心
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